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2026-07-22 - 20:26
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Wed Jul 22, 2026 13:01:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31116992620,3cyclictest17482-21nfsd11:11:1524
31116992620,3cyclictest17482-21nfsd11:11:1524
31116992620,3cyclictest17482-21nfsd11:11:1424
31116992491,3cyclictest35963-21grep10:10:1224
31116992491,3cyclictest35963-21grep10:10:1124
31116992421,2cyclictest0-21swapper/3010:52:2324
31116992421,2cyclictest0-21swapper/3010:52:2324
31116992421,2cyclictest0-21swapper/3010:52:2224
31116992381,233cyclictest0-21swapper/3011:20:0324
31116992381,233cyclictest0-21swapper/3011:20:0324
31116992381,233cyclictest0-21swapper/3011:20:0224
31116992370,2cyclictest0-21swapper/3012:15:2724
31116992370,2cyclictest0-21swapper/3012:15:2624
31116992351,4cyclictest37263-21CPU24
31116992351,4cyclictest37263-21CPU24
31116992331,228cyclictest0-21swapper/3011:43:3524
31116992331,228cyclictest0-21swapper/3011:43:3524
31116992311,2cyclictest0-21swapper/3011:05:2024
31116992311,2cyclictest0-21swapper/3011:05:2024
31116992311,2cyclictest0-21swapper/3011:05:1924
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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